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GstVideofilter abstract class for video filters
Original commit message from CVS: GstVideofilter abstract class for video filters
This commit is contained in:
David Schleef
parent
7ec579da84
commit
23e47de332
6 changed files with 1093 additions and 0 deletions
25
gst/videofilter/Makefile.am
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25
gst/videofilter/Makefile.am
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@ -0,0 +1,25 @@
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plugindir = $(libdir)/gstreamer-@GST_MAJORMINOR@
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plugin_LTLIBRARIES = libgstvideofilter.la
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noinst_LTLIBRARIES = libgstvideoexample.la
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noinst_HEADERS = gstvideofilter.h gstvideoexample.h
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EXTRA_DIST = gstvideotemplate.c gstvideotemplate.h make_filter
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libgstvideofilter_la_SOURCES = gstvideofilter.c
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libgstvideofilter_la_CFLAGS = $(GST_CFLAGS)
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libgstvideofilter_la_LIBADD =
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libgstvideofilter_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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libgstvideoexample_la_SOURCES = gstvideoexample.c
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libgstvideoexample_la_CFLAGS = $(GST_CFLAGS)
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libgstvideoexample_la_LIBADD =
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libgstvideoexample_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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# no, this doesn't work if $(srcdir) != (builddir)
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gstvideoexample.c gstvideoexample.h: $(srcdir)/make_filter \
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$(srcdir)/gstvideotemplate.c $(srcdir)/gstvideotemplate.h
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$(srcdir)/make_filter Videoexample
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584
gst/videofilter/gstvideofilter.c
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584
gst/videofilter/gstvideofilter.c
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@ -0,0 +1,584 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2003> David Schleef <ds@schleef.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*#define DEBUG_ENABLED */
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#include <gstvideofilter.h>
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#if 0
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/* elementfactory information */
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static GstElementDetails videofilter_details = {
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"Video scaler",
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"Filter/Video",
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"LGPL",
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"Resizes video",
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VERSION,
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"David Schleef <ds@schleef.org>",
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"(C) 2003",
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};
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#endif
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/* GstVideofilter signals and args */
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enum {
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/* FILL ME */
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LAST_SIGNAL
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};
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enum {
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ARG_0,
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ARG_METHOD,
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/* FILL ME */
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};
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static void gst_videofilter_class_init (GstVideofilterClass *klass);
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static void gst_videofilter_init (GstVideofilter *videofilter);
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static void gst_videofilter_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void gst_videofilter_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static void gst_videofilter_chain (GstPad *pad, GstBuffer *buf);
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GstCaps * gst_videofilter_class_get_capslist(GstVideofilterClass *klass);
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static void gst_videofilter_setup(GstVideofilter *videofilter);
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static GstElementClass *parent_class = NULL;
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GType
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gst_videofilter_get_type (void)
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{
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static GType videofilter_type = 0;
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if (!videofilter_type) {
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static const GTypeInfo videofilter_info = {
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sizeof(GstVideofilterClass), NULL,
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NULL,
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(GClassInitFunc)gst_videofilter_class_init,
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NULL,
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NULL,
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sizeof(GstVideofilter),
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0,
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(GInstanceInitFunc)gst_videofilter_init,
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};
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videofilter_type = g_type_register_static(GST_TYPE_ELEMENT,
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"GstVideofilter", &videofilter_info, G_TYPE_FLAG_ABSTRACT);
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}
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return videofilter_type;
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}
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static void
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gst_videofilter_class_init (GstVideofilterClass *klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass*)klass;
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gstelement_class = (GstElementClass*)klass;
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parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_videofilter_set_property;
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gobject_class->get_property = gst_videofilter_get_property;
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klass->formats = g_ptr_array_new();
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}
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#if 0
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static GstPadTemplate *
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gst_videofilter_src_template_factory(void)
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{
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static GstPadTemplate *templ = NULL;
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if(!templ){
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GstCaps *caps = GST_CAPS_NEW("src","video/raw",
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"width", GST_PROPS_INT_RANGE (0, G_MAXINT),
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"height", GST_PROPS_INT_RANGE (0, G_MAXINT));
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caps = gst_caps_intersect(caps, gst_videofilter_get_capslist ());
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templ = GST_PAD_TEMPLATE_NEW("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
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}
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return templ;
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}
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static GstPadTemplate *
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gst_videofilter_sink_template_factory(void)
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{
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static GstPadTemplate *templ = NULL;
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if(!templ){
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GstCaps *caps = GST_CAPS_NEW("sink","video/raw",
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"width", GST_PROPS_INT_RANGE (0, G_MAXINT),
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"height", GST_PROPS_INT_RANGE (0, G_MAXINT));
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caps = gst_caps_intersect(caps, gst_videofilter_get_capslist ());
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templ = GST_PAD_TEMPLATE_NEW("src", GST_PAD_SINK, GST_PAD_ALWAYS, caps);
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}
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return templ;
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}
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#endif
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static GstCaps *gst_videofilter_format_get_caps(GstVideofilterFormat *format)
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{
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unsigned int fourcc;
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GstCaps *caps;
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if(format->filter_func==NULL)
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return NULL;
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fourcc = GST_MAKE_FOURCC(format->fourcc[0],format->fourcc[1],format->fourcc[2],format->fourcc[3]);
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if(format->bpp){
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caps = GST_CAPS_NEW ("videoflip", "video/raw",
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"format", GST_PROPS_FOURCC (fourcc),
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"depth", GST_PROPS_INT(format->bpp),
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"bpp", GST_PROPS_INT(format->depth),
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"endianness", GST_PROPS_INT(format->endianness),
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"red_mask", GST_PROPS_INT(format->red_mask),
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"green_mask", GST_PROPS_INT(format->green_mask),
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"blue_mask", GST_PROPS_INT(format->blue_mask));
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}else{
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caps = GST_CAPS_NEW ("videoflip", "video/raw",
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"format", GST_PROPS_FOURCC (fourcc));
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}
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return caps;
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}
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GstCaps * gst_videofilter_class_get_capslist(GstVideofilterClass *klass)
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{
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static GstCaps *capslist = NULL;
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GstCaps *caps;
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int i;
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if (capslist){
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gst_caps_ref(capslist);
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return capslist;
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}
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for(i=0;i<klass->formats->len;i++){
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caps = gst_videofilter_format_get_caps(g_ptr_array_index(klass->formats,i));
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capslist = gst_caps_append(capslist, caps);
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}
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gst_caps_ref(capslist);
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return capslist;
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}
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static GstCaps *
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gst_videofilter_sink_getcaps (GstPad *pad, GstCaps *caps)
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{
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GstVideofilter *videofilter;
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GstVideofilterClass *klass;
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GstCaps *capslist = NULL;
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GstCaps *peercaps;
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GstCaps *sizecaps;
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int i;
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GST_DEBUG("gst_videofilter_sink_getcaps");
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videofilter = GST_VIDEOFILTER (gst_pad_get_parent (pad));
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klass = GST_VIDEOFILTER_CLASS(G_OBJECT_GET_CLASS(videofilter));
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/* get list of peer's caps */
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peercaps = gst_pad_get_allowed_caps (videofilter->srcpad);
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g_print("peercaps: %s\n", gst_caps_to_string(peercaps));
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/* FIXME videofilter doesn't allow passthru of video formats it
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* doesn't understand. */
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/* Look through our list of caps and find those that match with
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* the peer's formats. Create a list of them. */
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/* FIXME optimize if peercaps == NULL */
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for(i=0;i<klass->formats->len;i++){
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GstCaps *icaps;
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GstCaps *fromcaps = gst_videofilter_format_get_caps(g_ptr_array_index(
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klass->formats,i));
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g_print("testing caps: %s\n", gst_caps_to_string(fromcaps));
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icaps = gst_caps_intersect(fromcaps, peercaps);
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//if(gst_caps_is_always_compatible(fromcaps, peercaps)){
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if(icaps != NULL){
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capslist = gst_caps_append(capslist, fromcaps);
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g_print("(yes)\n");
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}else{
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g_print("(no)\n");
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}
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//gst_caps_unref (fromcaps);
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if(icaps) gst_caps_unref (icaps);
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}
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gst_caps_unref (peercaps);
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sizecaps = GST_CAPS_NEW("videofilter_size","video/raw",
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"width", GST_PROPS_INT_RANGE (0, G_MAXINT),
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"height", GST_PROPS_INT_RANGE (0, G_MAXINT));
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caps = gst_caps_intersect(capslist, sizecaps);
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gst_caps_unref (sizecaps);
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g_print("getcaps: %s\n",gst_caps_to_string(caps));
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return caps;
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}
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static GstPadLinkReturn
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gst_videofilter_src_link (GstPad *pad, GstCaps *caps)
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{
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GstVideofilter *videofilter;
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GstPadLinkReturn ret;
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GstCaps *peercaps;
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GST_DEBUG("gst_videofilter_src_link");
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videofilter = GST_VIDEOFILTER (gst_pad_get_parent (pad));
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if (!GST_CAPS_IS_FIXED (caps)) {
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return GST_PAD_LINK_DELAYED;
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}
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gst_caps_debug(caps,"ack");
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videofilter->format = gst_videofilter_find_format_by_caps (videofilter,caps);
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g_return_val_if_fail(videofilter->format, GST_PAD_LINK_REFUSED);
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gst_caps_get_int (caps, "width", &videofilter->to_width);
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gst_caps_get_int (caps, "height", &videofilter->to_height);
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GST_DEBUG("width %d height %d",videofilter->to_width,videofilter->to_height);
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peercaps = gst_caps_copy(caps);
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gst_caps_set(peercaps, "width", GST_PROPS_INT_RANGE (0, G_MAXINT));
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gst_caps_set(peercaps, "height", GST_PROPS_INT_RANGE (0, G_MAXINT));
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ret = gst_pad_try_set_caps (videofilter->srcpad, peercaps);
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gst_caps_unref(peercaps);
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if(ret==GST_PAD_LINK_OK){
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caps = gst_pad_get_caps (videofilter->srcpad);
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gst_caps_get_int (caps, "width", &videofilter->from_width);
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gst_caps_get_int (caps, "height", &videofilter->from_height);
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//gst_videofilter_setup(videofilter);
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}
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return ret;
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}
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static GstPadLinkReturn
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gst_videofilter_sink_link (GstPad *pad, GstCaps *caps)
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{
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GstVideofilter *videofilter;
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GstPadLinkReturn ret;
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GstCaps *peercaps;
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GST_DEBUG("gst_videofilter_sink_link");
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videofilter = GST_VIDEOFILTER (gst_pad_get_parent (pad));
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if (!GST_CAPS_IS_FIXED (caps)) {
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return GST_PAD_LINK_DELAYED;
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}
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videofilter->format = gst_videofilter_find_format_by_caps (videofilter,caps);
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g_print("sink_link: %s\n",gst_caps_to_string(caps));
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g_return_val_if_fail(videofilter->format, GST_PAD_LINK_REFUSED);
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gst_caps_get_int (caps, "width", &videofilter->from_width);
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gst_caps_get_int (caps, "height", &videofilter->from_height);
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gst_videofilter_setup(videofilter);
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peercaps = gst_caps_copy(caps);
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gst_caps_set(peercaps, "width", GST_PROPS_INT (videofilter->to_width));
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gst_caps_set(peercaps, "height", GST_PROPS_INT (videofilter->to_height));
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ret = gst_pad_try_set_caps (videofilter->srcpad, peercaps);
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gst_caps_unref(peercaps);
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if(ret==GST_PAD_LINK_OK || ret==GST_PAD_LINK_DONE){
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caps = gst_pad_get_caps (videofilter->srcpad);
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//gst_caps_get_int (caps, "width", &videofilter->to_width);
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//gst_caps_get_int (caps, "height", &videofilter->to_height);
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//gst_videofilter_setup(videofilter);
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}
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g_print("returning %d\n",ret);
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return ret;
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}
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static void
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gst_videofilter_init (GstVideofilter *videofilter)
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{
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GST_DEBUG("gst_videofilter_init");
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}
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void
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gst_videofilter_postinit (GstVideofilter *videofilter)
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{
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/* sinkpad and srcpad should be inited by subclass */
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/* FIXME */
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//videofilter->sinkpad = NULL;
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gst_element_add_pad(GST_ELEMENT(videofilter),videofilter->sinkpad);
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gst_pad_set_chain_function(videofilter->sinkpad,gst_videofilter_chain);
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gst_pad_set_link_function(videofilter->sinkpad,gst_videofilter_sink_link);
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gst_pad_set_getcaps_function(videofilter->sinkpad,gst_videofilter_sink_getcaps);
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/* FIXME */
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//videofilter->srcpad = NULL;
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gst_element_add_pad(GST_ELEMENT(videofilter),videofilter->srcpad);
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gst_pad_set_link_function(videofilter->srcpad,gst_videofilter_src_link);
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//gst_pad_set_getcaps_function(videofilter->srcpad,gst_videofilter_getcaps);
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videofilter->inited = FALSE;
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}
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static void
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gst_videofilter_chain (GstPad *pad, GstBuffer *buf)
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{
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GstVideofilter *videofilter;
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guchar *data;
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gulong size;
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GstBuffer *outbuf;
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GST_DEBUG ("gst_videofilter_chain");
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g_return_if_fail (pad != NULL);
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g_return_if_fail (GST_IS_PAD (pad));
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g_return_if_fail (buf != NULL);
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videofilter = GST_VIDEOFILTER (gst_pad_get_parent (pad));
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//g_return_if_fail (videofilter->inited);
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data = GST_BUFFER_DATA(buf);
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size = GST_BUFFER_SIZE(buf);
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if(videofilter->passthru){
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gst_pad_push(videofilter->srcpad, buf);
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return;
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}
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GST_DEBUG ("gst_videofilter_chain: got buffer of %ld bytes in '%s'",size,
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GST_OBJECT_NAME (videofilter));
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GST_DEBUG("size=%ld from=%dx%d to=%dx%d fromsize=%ld (should be %d) tosize=%d",
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size,
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videofilter->from_width, videofilter->from_height,
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videofilter->to_width, videofilter->to_height,
|
||||
size, videofilter->from_buf_size,
|
||||
videofilter->to_buf_size);
|
||||
|
||||
g_return_if_fail (size == videofilter->from_buf_size);
|
||||
|
||||
outbuf = gst_buffer_new();
|
||||
/* FIXME: handle bufferpools */
|
||||
GST_BUFFER_SIZE(outbuf) = videofilter->to_buf_size;
|
||||
GST_BUFFER_DATA(outbuf) = g_malloc (videofilter->to_buf_size);
|
||||
GST_BUFFER_TIMESTAMP(outbuf) = GST_BUFFER_TIMESTAMP(buf);
|
||||
|
||||
g_return_if_fail(videofilter->format);
|
||||
GST_DEBUG ("format %s",videofilter->format->fourcc);
|
||||
|
||||
videofilter->in_buf = buf;
|
||||
videofilter->out_buf = outbuf;
|
||||
|
||||
videofilter->format->filter_func(videofilter, GST_BUFFER_DATA(outbuf), data);
|
||||
|
||||
GST_DEBUG ("gst_videofilter_chain: pushing buffer of %d bytes in '%s'",GST_BUFFER_SIZE(outbuf),
|
||||
GST_OBJECT_NAME (videofilter));
|
||||
|
||||
gst_pad_push(videofilter->srcpad, outbuf);
|
||||
|
||||
gst_buffer_unref(buf);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_videofilter_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
|
||||
{
|
||||
GstVideofilter *src;
|
||||
|
||||
/* it's not null if we got it, but it might not be ours */
|
||||
g_return_if_fail(GST_IS_VIDEOFILTER(object));
|
||||
src = GST_VIDEOFILTER(object);
|
||||
|
||||
GST_DEBUG("gst_videofilter_set_property");
|
||||
switch (prop_id) {
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_videofilter_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
|
||||
{
|
||||
GstVideofilter *src;
|
||||
|
||||
/* it's not null if we got it, but it might not be ours */
|
||||
g_return_if_fail(GST_IS_VIDEOFILTER(object));
|
||||
src = GST_VIDEOFILTER(object);
|
||||
|
||||
switch (prop_id) {
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
int gst_videofilter_get_input_width(GstVideofilter *videofilter)
|
||||
{
|
||||
g_return_val_if_fail(GST_IS_VIDEOFILTER(videofilter),0);
|
||||
|
||||
return videofilter->from_width;
|
||||
}
|
||||
|
||||
int gst_videofilter_get_input_height(GstVideofilter *videofilter)
|
||||
{
|
||||
g_return_val_if_fail(GST_IS_VIDEOFILTER(videofilter),0);
|
||||
|
||||
return videofilter->from_height;
|
||||
}
|
||||
|
||||
void gst_videofilter_set_output_size(GstVideofilter *videofilter,
|
||||
int width, int height)
|
||||
{
|
||||
int ret;
|
||||
GstCaps *srccaps;
|
||||
|
||||
g_return_if_fail(GST_IS_VIDEOFILTER(videofilter));
|
||||
|
||||
videofilter->to_width = width;
|
||||
videofilter->to_height = height;
|
||||
|
||||
videofilter->to_buf_size = (videofilter->to_width * videofilter->to_height
|
||||
* videofilter->format->depth)/8;
|
||||
|
||||
srccaps = gst_caps_copy(gst_pad_get_caps(videofilter->srcpad));
|
||||
|
||||
gst_caps_set(srccaps, "width", GST_PROPS_INT (videofilter->to_width));
|
||||
gst_caps_set(srccaps, "height", GST_PROPS_INT (videofilter->to_height));
|
||||
|
||||
ret = gst_pad_try_set_caps (videofilter->srcpad, srccaps);
|
||||
|
||||
g_print("try_set_caps() returned %d\n", ret);
|
||||
|
||||
}
|
||||
|
||||
static void gst_videofilter_setup(GstVideofilter *videofilter)
|
||||
{
|
||||
GstVideofilterClass *klass;
|
||||
|
||||
klass = GST_VIDEOFILTER_CLASS(G_OBJECT_GET_CLASS(videofilter));
|
||||
|
||||
if(klass->setup){
|
||||
klass->setup(videofilter);
|
||||
}
|
||||
|
||||
if(videofilter->to_width == 0){
|
||||
videofilter->to_width = videofilter->from_width;
|
||||
}
|
||||
if(videofilter->to_height == 0){
|
||||
videofilter->to_height = videofilter->from_height;
|
||||
}
|
||||
|
||||
g_return_if_fail(videofilter->format != NULL);
|
||||
g_return_if_fail(videofilter->from_width > 0);
|
||||
g_return_if_fail(videofilter->from_height > 0);
|
||||
g_return_if_fail(videofilter->to_width > 0);
|
||||
g_return_if_fail(videofilter->to_height > 0);
|
||||
|
||||
videofilter->from_buf_size = (videofilter->from_width * videofilter->from_height *
|
||||
videofilter->format->depth) / 8;
|
||||
videofilter->to_buf_size = (videofilter->to_width * videofilter->to_height *
|
||||
videofilter->format->depth) / 8;
|
||||
|
||||
videofilter->inited = TRUE;
|
||||
}
|
||||
|
||||
GstVideofilterFormat *gst_videofilter_find_format_by_caps(GstVideofilter *videofilter,
|
||||
GstCaps *caps)
|
||||
{
|
||||
int i;
|
||||
GstCaps *c;
|
||||
GstVideofilterClass *klass;
|
||||
GstVideofilterFormat *format;
|
||||
|
||||
klass = GST_VIDEOFILTER_CLASS(G_OBJECT_GET_CLASS(videofilter));
|
||||
|
||||
g_return_val_if_fail(caps != NULL, NULL);
|
||||
|
||||
for(i=0;i<klass->formats->len;i++){
|
||||
format = g_ptr_array_index(klass->formats,i);
|
||||
c = gst_videofilter_format_get_caps(format);
|
||||
|
||||
if(c){
|
||||
if(gst_caps_is_always_compatible(caps, c)){
|
||||
gst_caps_unref(c);
|
||||
return format;
|
||||
}
|
||||
}
|
||||
gst_caps_unref(c);
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void gst_videofilter_class_add_format(GstVideofilterClass *videofilterclass,
|
||||
GstVideofilterFormat *format)
|
||||
{
|
||||
g_ptr_array_add(videofilterclass->formats, format);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
plugin_init (GModule *module, GstPlugin *plugin)
|
||||
{
|
||||
#if 0
|
||||
GstElementFactory *factory;
|
||||
|
||||
/* create an elementfactory for the videofilter element */
|
||||
factory = gst_element_factory_new("videofilter",GST_TYPE_VIDEOFILTER,
|
||||
&videofilter_details);
|
||||
g_return_val_if_fail(factory != NULL, FALSE);
|
||||
|
||||
/* FIXME: we need to init the class before we can call the
|
||||
* pad template factories */
|
||||
gst_element_factory_add_pad_template (factory,
|
||||
GST_PAD_TEMPLATE_GET (gst_videofilter_sink_template_factory));
|
||||
gst_element_factory_add_pad_template (factory,
|
||||
GST_PAD_TEMPLATE_GET (gst_videofilter_src_template_factory));
|
||||
|
||||
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
|
||||
#endif
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
GstPluginDesc plugin_desc = {
|
||||
GST_VERSION_MAJOR,
|
||||
GST_VERSION_MINOR,
|
||||
"gstvideofilter",
|
||||
plugin_init
|
||||
};
|
||||
109
gst/videofilter/gstvideofilter.h
Normal file
109
gst/videofilter/gstvideofilter.h
Normal file
|
|
@ -0,0 +1,109 @@
|
|||
/* GStreamer
|
||||
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
|
||||
#ifndef __GST_VIDEOFILTER_H__
|
||||
#define __GST_VIDEOFILTER_H__
|
||||
|
||||
|
||||
#include <config.h>
|
||||
#include <gst/gst.h>
|
||||
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
typedef struct _GstVideofilter GstVideofilter;
|
||||
typedef struct _GstVideofilterClass GstVideofilterClass;
|
||||
|
||||
typedef void (*GstVideofilterFilterFunc)(GstVideofilter *filter,
|
||||
void *out_data, void *in_data);
|
||||
|
||||
typedef void (*GstVideofilterSetupFunc)(GstVideofilter *filter);
|
||||
|
||||
typedef struct _GstVideofilterFormat GstVideofilterFormat;
|
||||
struct _GstVideofilterFormat {
|
||||
char *fourcc;
|
||||
int depth;
|
||||
GstVideofilterFilterFunc filter_func;
|
||||
int bpp;
|
||||
unsigned int endianness;
|
||||
unsigned int red_mask;
|
||||
unsigned int green_mask;
|
||||
unsigned int blue_mask;
|
||||
};
|
||||
|
||||
#define GST_TYPE_VIDEOFILTER \
|
||||
(gst_videofilter_get_type())
|
||||
#define GST_VIDEOFILTER(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEOFILTER,GstVideofilter))
|
||||
#define GST_VIDEOFILTER_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEOFILTER,GstVideofilterClass))
|
||||
#define GST_IS_VIDEOFILTER(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEOFILTER))
|
||||
#define GST_IS_VIDEOFILTER_CLASS(obj) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEOFILTER))
|
||||
|
||||
struct _GstVideofilter {
|
||||
GstElement element;
|
||||
|
||||
GstPad *sinkpad,*srcpad;
|
||||
|
||||
/* video state */
|
||||
gboolean inited;
|
||||
GstVideofilterFormat *format;
|
||||
gint to_width;
|
||||
gint to_height;
|
||||
gint from_width;
|
||||
gint from_height;
|
||||
gboolean passthru;
|
||||
|
||||
/* private */
|
||||
gint from_buf_size;
|
||||
gint to_buf_size;
|
||||
|
||||
GstBuffer *in_buf;
|
||||
GstBuffer *out_buf;
|
||||
};
|
||||
|
||||
struct _GstVideofilterClass {
|
||||
GstElementClass parent_class;
|
||||
|
||||
GPtrArray *formats;
|
||||
GstVideofilterSetupFunc setup;
|
||||
};
|
||||
|
||||
GType gst_videofilter_get_type(void);
|
||||
|
||||
int gst_videofilter_get_input_width(GstVideofilter *videofilter);
|
||||
int gst_videofilter_get_input_height(GstVideofilter *videofilter);
|
||||
void gst_videofilter_set_output_size(GstVideofilter *videofilter,
|
||||
int width, int height);
|
||||
GstVideofilterFormat *gst_videofilter_find_format_by_caps(GstVideofilter *filter,
|
||||
GstCaps *caps);
|
||||
GstCaps *gst_videofilter_class_get_capslist(GstVideofilterClass *videofilterclass);
|
||||
|
||||
void gst_videofilter_postinit(GstVideofilter *videofilter);
|
||||
|
||||
void gst_videofilter_class_add_format(GstVideofilterClass *videofilterclass,
|
||||
GstVideofilterFormat *format);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __GST_VIDEOFILTER_H__ */
|
||||
|
||||
272
gst/videofilter/gstvideotemplate.c
Normal file
272
gst/videofilter/gstvideotemplate.c
Normal file
|
|
@ -0,0 +1,272 @@
|
|||
/* GStreamer
|
||||
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
||||
* Copyright (C) <2003> David Schleef <ds@schleef.org>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
|
||||
/*#define DEBUG_ENABLED */
|
||||
#include <gstvideotemplate.h>
|
||||
|
||||
|
||||
/* elementfactory information */
|
||||
static GstElementDetails videotemplate_details = {
|
||||
"Video Filter Template",
|
||||
"Filter/Video",
|
||||
"LGPL",
|
||||
"Template for a video filter",
|
||||
VERSION,
|
||||
"David Schleef <ds@schleef.org>",
|
||||
"(C) 2003",
|
||||
};
|
||||
|
||||
/* GstVideotemplate signals and args */
|
||||
enum {
|
||||
/* FILL ME */
|
||||
LAST_SIGNAL
|
||||
};
|
||||
|
||||
enum {
|
||||
ARG_0,
|
||||
/* FILL ME */
|
||||
};
|
||||
|
||||
static void gst_videotemplate_class_init (GstVideotemplateClass *klass);
|
||||
static void gst_videotemplate_init (GstVideotemplate *videotemplate);
|
||||
|
||||
static void gst_videotemplate_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
|
||||
static void gst_videotemplate_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
|
||||
|
||||
static void gst_videotemplate_planar411(GstVideofilter *videofilter, void *dest, void *src);
|
||||
static void gst_videotemplate_setup(GstVideofilter *videofilter);
|
||||
|
||||
static GstVideotemplateClass *this_class = NULL;
|
||||
static GstVideofilterClass *parent_class = NULL;
|
||||
static GstElementClass *element_class = NULL;
|
||||
|
||||
GType
|
||||
gst_videotemplate_get_type (void)
|
||||
{
|
||||
static GType videotemplate_type = 0;
|
||||
|
||||
if (!videotemplate_type) {
|
||||
static const GTypeInfo videotemplate_info = {
|
||||
sizeof(GstVideotemplateClass), NULL,
|
||||
NULL,
|
||||
(GClassInitFunc)gst_videotemplate_class_init,
|
||||
NULL,
|
||||
NULL,
|
||||
sizeof(GstVideotemplate),
|
||||
0,
|
||||
(GInstanceInitFunc)gst_videotemplate_init,
|
||||
};
|
||||
videotemplate_type = g_type_register_static(GST_TYPE_VIDEOFILTER, "GstVideotemplate", &videotemplate_info, 0);
|
||||
}
|
||||
return videotemplate_type;
|
||||
}
|
||||
|
||||
static GstVideofilterFormat gst_videotemplate_formats[] = {
|
||||
{ "I420", 12, gst_videotemplate_planar411, },
|
||||
};
|
||||
|
||||
static void
|
||||
gst_videotemplate_class_init (GstVideotemplateClass *klass)
|
||||
{
|
||||
GObjectClass *gobject_class;
|
||||
GstElementClass *gstelement_class;
|
||||
GstVideofilterClass *gstvideofilter_class;
|
||||
int i;
|
||||
|
||||
gobject_class = (GObjectClass*)klass;
|
||||
gstelement_class = (GstElementClass*)klass;
|
||||
gstvideofilter_class = (GstVideofilterClass *)klass;
|
||||
|
||||
#if 0
|
||||
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_METHOD,
|
||||
g_param_spec_enum("method","method","method",
|
||||
GST_TYPE_VIDEOTEMPLATE_METHOD, GST_VIDEOTEMPLATE_METHOD_90R,
|
||||
G_PARAM_READWRITE));
|
||||
#endif
|
||||
|
||||
this_class = klass;
|
||||
parent_class = g_type_class_ref(GST_TYPE_VIDEOFILTER);
|
||||
element_class = g_type_class_ref(GST_TYPE_ELEMENT);
|
||||
|
||||
gobject_class->set_property = gst_videotemplate_set_property;
|
||||
gobject_class->get_property = gst_videotemplate_get_property;
|
||||
|
||||
gstvideofilter_class->setup = gst_videotemplate_setup;
|
||||
|
||||
for(i=0;i<G_N_ELEMENTS(gst_videotemplate_formats);i++){
|
||||
gst_videofilter_class_add_format(parent_class, gst_videotemplate_formats + i);
|
||||
}
|
||||
}
|
||||
|
||||
static GstCaps *gst_videotemplate_get_capslist(void)
|
||||
{
|
||||
GstVideofilterClass *klass;
|
||||
|
||||
klass = g_type_class_ref(GST_TYPE_VIDEOFILTER);
|
||||
|
||||
return gst_videofilter_class_get_capslist(klass);
|
||||
}
|
||||
|
||||
static GstPadTemplate *
|
||||
gst_videotemplate_src_template_factory(void)
|
||||
{
|
||||
static GstPadTemplate *templ = NULL;
|
||||
|
||||
if(!templ){
|
||||
GstCaps *caps = GST_CAPS_NEW("src","video/raw",
|
||||
"width", GST_PROPS_INT_RANGE (0, G_MAXINT),
|
||||
"height", GST_PROPS_INT_RANGE (0, G_MAXINT));
|
||||
|
||||
caps = gst_caps_intersect(caps, gst_videotemplate_get_capslist ());
|
||||
|
||||
templ = GST_PAD_TEMPLATE_NEW("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
|
||||
}
|
||||
return templ;
|
||||
}
|
||||
|
||||
static GstPadTemplate *
|
||||
gst_videotemplate_sink_template_factory(void)
|
||||
{
|
||||
static GstPadTemplate *templ = NULL;
|
||||
|
||||
if(!templ){
|
||||
GstCaps *caps = GST_CAPS_NEW("sink","video/raw",
|
||||
"width", GST_PROPS_INT_RANGE (0, G_MAXINT),
|
||||
"height", GST_PROPS_INT_RANGE (0, G_MAXINT));
|
||||
|
||||
caps = gst_caps_intersect(caps, gst_videotemplate_get_capslist ());
|
||||
|
||||
templ = GST_PAD_TEMPLATE_NEW("src", GST_PAD_SINK, GST_PAD_ALWAYS, caps);
|
||||
}
|
||||
return templ;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_videotemplate_init (GstVideotemplate *videotemplate)
|
||||
{
|
||||
GstVideofilter *videofilter;
|
||||
|
||||
GST_DEBUG("gst_videotemplate_init");
|
||||
|
||||
videofilter = GST_VIDEOFILTER(videotemplate);
|
||||
|
||||
videofilter->sinkpad = gst_pad_new_from_template (
|
||||
GST_PAD_TEMPLATE_GET (gst_videotemplate_sink_template_factory),
|
||||
"sink");
|
||||
|
||||
videofilter->srcpad = gst_pad_new_from_template (
|
||||
GST_PAD_TEMPLATE_GET (gst_videotemplate_src_template_factory),
|
||||
"src");
|
||||
|
||||
gst_videofilter_postinit(GST_VIDEOFILTER(videotemplate));
|
||||
}
|
||||
|
||||
static void
|
||||
gst_videotemplate_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
|
||||
{
|
||||
GstVideotemplate *src;
|
||||
|
||||
/* it's not null if we got it, but it might not be ours */
|
||||
g_return_if_fail(GST_IS_VIDEOTEMPLATE(object));
|
||||
src = GST_VIDEOTEMPLATE(object);
|
||||
|
||||
GST_DEBUG("gst_videotemplate_set_property");
|
||||
switch (prop_id) {
|
||||
#if 0
|
||||
case ARG_METHOD:
|
||||
src->method = g_value_get_enum (value);
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_videotemplate_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
|
||||
{
|
||||
GstVideotemplate *src;
|
||||
|
||||
/* it's not null if we got it, but it might not be ours */
|
||||
g_return_if_fail(GST_IS_VIDEOTEMPLATE(object));
|
||||
src = GST_VIDEOTEMPLATE(object);
|
||||
|
||||
switch (prop_id) {
|
||||
#if 0
|
||||
case ARG_METHOD:
|
||||
g_value_set_enum (value, src->method);
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static gboolean plugin_init (GModule *module, GstPlugin *plugin)
|
||||
{
|
||||
GstElementFactory *factory;
|
||||
|
||||
if(!gst_library_load("gstvideofilter"))
|
||||
return FALSE;
|
||||
|
||||
/* create an elementfactory for the videotemplate element */
|
||||
factory = gst_element_factory_new("videotemplate",GST_TYPE_VIDEOTEMPLATE,
|
||||
&videotemplate_details);
|
||||
g_return_val_if_fail(factory != NULL, FALSE);
|
||||
|
||||
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (gst_videotemplate_sink_template_factory));
|
||||
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (gst_videotemplate_src_template_factory));
|
||||
|
||||
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
GstPluginDesc plugin_desc = {
|
||||
GST_VERSION_MAJOR,
|
||||
GST_VERSION_MINOR,
|
||||
"videotemplate",
|
||||
plugin_init
|
||||
};
|
||||
|
||||
static void gst_videotemplate_setup(GstVideofilter *videofilter)
|
||||
{
|
||||
GstVideotemplate *videotemplate;
|
||||
|
||||
g_return_if_fail(GST_IS_VIDEOTEMPLATE(videofilter));
|
||||
videotemplate = GST_VIDEOTEMPLATE(videofilter);
|
||||
|
||||
/* if any setup needs to be done, do it here */
|
||||
|
||||
}
|
||||
|
||||
static void gst_videotemplate_planar411(GstVideofilter *videofilter,
|
||||
void *dest, void *src)
|
||||
{
|
||||
GstVideotemplate *videotemplate;
|
||||
|
||||
g_return_if_fail(GST_IS_VIDEOTEMPLATE(videofilter));
|
||||
videotemplate = GST_VIDEOTEMPLATE(videofilter);
|
||||
|
||||
/* do something interesting here */
|
||||
}
|
||||
|
||||
61
gst/videofilter/gstvideotemplate.h
Normal file
61
gst/videofilter/gstvideotemplate.h
Normal file
|
|
@ -0,0 +1,61 @@
|
|||
/* GStreamer
|
||||
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
|
||||
#ifndef __GST_VIDEOTEMPLATE_H__
|
||||
#define __GST_VIDEOTEMPLATE_H__
|
||||
|
||||
|
||||
#include <config.h>
|
||||
#include <gst/gst.h>
|
||||
|
||||
#include "gstvideofilter.h"
|
||||
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define GST_TYPE_VIDEOTEMPLATE \
|
||||
(gst_videotemplate_get_type())
|
||||
#define GST_VIDEOTEMPLATE(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEOTEMPLATE,GstVideotemplate))
|
||||
#define GST_VIDEOTEMPLATE_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEOTEMPLATE,GstVideotemplateClass))
|
||||
#define GST_IS_VIDEOTEMPLATE(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEOTEMPLATE))
|
||||
#define GST_IS_VIDEOTEMPLATE_CLASS(obj) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEOTEMPLATE))
|
||||
|
||||
typedef struct _GstVideotemplate GstVideotemplate;
|
||||
typedef struct _GstVideotemplateClass GstVideotemplateClass;
|
||||
|
||||
struct _GstVideotemplate {
|
||||
GstVideofilter videofilter;
|
||||
|
||||
};
|
||||
|
||||
struct _GstVideotemplateClass {
|
||||
GstVideofilterClass parent_class;
|
||||
};
|
||||
|
||||
GType gst_videotemplate_get_type(void);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __GST_VIDEOTEMPLATE_H__ */
|
||||
|
||||
42
gst/videofilter/make_filter
Executable file
42
gst/videofilter/make_filter
Executable file
|
|
@ -0,0 +1,42 @@
|
|||
#!/usr/bin/perl
|
||||
#
|
||||
|
||||
if(scalar(@ARGV) < 1){
|
||||
print "$0 Objectname\n";
|
||||
print " creates gstobjectname.{c,h} implementing GstObjectname,\n";
|
||||
print " subclassing GstVideofilter.\n";
|
||||
exit(0);
|
||||
}
|
||||
|
||||
$Template = $ARGV[0];
|
||||
($TEMPLATE = $Template) =~ tr/a-z/A-Z/;
|
||||
($template = $Template) =~ tr/A-Z/a-z/;
|
||||
|
||||
open IN, "gstvideotemplate.c";
|
||||
open OUT, ">gst$template.c";
|
||||
|
||||
@lines = <IN>;
|
||||
map { s/Videotemplate/$Template/g;
|
||||
s/videotemplate/$template/g;
|
||||
s/VIDEOTEMPLATE/$TEMPLATE/g;
|
||||
} @lines;
|
||||
|
||||
print OUT @lines;
|
||||
|
||||
close IN;
|
||||
close OUT;
|
||||
|
||||
open IN, "gstvideotemplate.h";
|
||||
open OUT, ">gst$template.h";
|
||||
|
||||
@lines = <IN>;
|
||||
map { s/Videotemplate/$Template/g;
|
||||
s/videotemplate/$template/g;
|
||||
s/VIDEOTEMPLATE/$TEMPLATE/g;
|
||||
} @lines;
|
||||
|
||||
print OUT @lines;
|
||||
|
||||
close IN;
|
||||
close OUT;
|
||||
|
||||
Loading…
Reference in a new issue